Bosch/Neff Dishwasher expert help required!

ITtim

Hi All, hope someone on here knows a little about dishwashers, I have a Neff dishwasher which over the past couple of months has periodically stopped working. After much research I have realised that the anti flood device is being activated.

I've now got the dishwasher out and the side panel off, its now clear of water. I set it to do a quick was and I noticed a little bit of water in the areas marked with an arrow on the picture. (I suspect the little bit of water I found on the bottom arrow may have trickled from somewhere else.

So my questions are...

1. Can I seal these areas with some waterproof sealant?
2. Can anyone offer some other advice on how to fix it?
3. Should I be looking for a leak else where?
4. Are there any other tips that could help me getting this machine working properly without having to 'de flood' it every week?

Many Thanks in advance

ITtim

Ok, just some extra info, I've set it for a proper wash, I saw the water go through the pipes shown with the arrows. As it did I then saw a reasonably high amount of water spill from the area just to the left of the red anti flood spindle. (in this picture covered by the white celophane) it then proceeded to 'pulse' the anti flood switch.

Now it may be that it is meant to do this during the wash to activate the drainage (?) but i'm sure the amount of water I saw drip out is almost certainly why I'm having this problem. Could it be caused by a blocked drainage hose? if so how do i clean it?

Does anyone know if that unit with the anti flood device in is easy to remove?

Malvolio

Hi, I have just this morning had the same problem with my Neff dishwasher. The symptom was that the dishwasher drain pump was running continuously. A couple of weeks ago when the problem first occurred, I had taken off the lower front panel under the door and realised that the plastic undertray beneath the washing compartment had water in it, which was activating the anti-flood switch causing the drain pump to switch on. At the time, I dried the water out and the machine then worked ok for a couple of weeks until today when the drain pump was again running continuously.

So, I pulled the dishwasher out and removed the left hand cover to reveal the same setup as in your photo above. Once again, the undertray was half full of water and the anti flood switch had operated. I drained off the flood water and then switched the machine on to a quick wash cycle (water supply and drain hoses still connected but being very careful not to touch anything inside the machine due to live electrics). As the machine started to fill up, there was quite a lot of water flowing out where your top red arrow is pointing and also from the open top of the translucent plastic chamber behind the piece of flimsy white plastic to the left of the vertical red push rod that operates the anti flood switch. Behind the flimsy plastic, inside the translucent plastic chamber, is a red float and I could see the water coming up over the top of this and escaping through the open top of the chamber.

The root cause seems to have been a partially blocked hose that delivers water from this translucent plastic chamber to the sump of the dishwasher itself. One end of this hose is visible in the lower right corner of your picture, just to the right of the vertical red float switch push rod. This hose can be easily pulled out at both ends - there are no clips or other fittings, it's just a push fit. Only do this with power disconnected! Once removed, the hose can be flushed through to remove the gunge. In my case, I also removed the translucent plastic chamber that the water was leaking from and took it apart as it was gunged up inside, like yours seems to be in the photo. However, I don't actually think this was causing much problem - I think it was down to the partially blocked hose.

Having put it all back together, I ran another quick wash cycle and this time, the translucent plastic chamber never looked like overflowing, as it had done before.

It should be possible to remove and clean this hose with the dishwasher still in situ by only removing the lower front access panel under the door. I hope this works for you.

Icandothat

My neff dishwasher is leaking from the bottom left of the door. I have replaced both of the door seals. I think it may be trying to wash with too much water. There are no blockages and I have cleaned all the bits in your photograph. Could it be the Pressure switch - the part with the blue lever on it? Any help is very welcome!

Brigster

The water level should be about the bottom edge of the salt filler cap.

You might have a leak past the seal of your dispenser - you can see tell-tale signs if you take the door cover panel off - BUT POWER OFF, FIRST!!!!!!!!!

Also check you have no blockages in your spray arms, causing them to turn less efficiently, or utensils/pots or pans preventing the spray arm from rotating, making it squirt relentlessly at the same spot on your door seal.

Icandothat

Thanks for that and I did do one last check of everything and discovered that the bottom spray arm had not completely clicked into postition. This was enough to make it leak. Thank you for reminding me to check and check again!

Brigster wrote: »

The water level should be about the bottom edge of the salt filler cap.

You might have a leak past the seal of your dispenser - you can see tell-tale signs if you take the door cover panel off - BUT POWER OFF, FIRST!!!!!!!!!

Also check you have no blockages in your spray arms, causing them to turn less efficiently, or utensils/pots or pans preventing the spray arm from rotating, making it squirt relentlessly at the same spot on your door seal.